# CallContract()

Method Signature

```go
func CallContract(blockchain string, from string, project string, request string) map[string]interface{}
```

**Parameters**

| Name         | Type   | Description                                                                                                                 |
| ------------ | ------ | --------------------------------------------------------------------------------------------------------------------------- |
| `blockchain` | String | Blockchain address in hex                                                                                                   |
| `from`       | String | User's wallet address in hex                                                                                                |
| `project`    | String | Smart Contract's address in hex                                                                                             |
| `request`    | String | Requested function in string format (include the parenthesis and the semicolumn e.g. CRC\_Contract.\_\_GetContractName();). |

**Example**

```go
package main

import (
	"fmt"

	"github.com/circular-protocol/circular-go/circular_protocol_api"
)

func main() {
	var blockchain = "0x8a20baa40c45dc5055aeb26197c203e576ef389d9acb171bd62da11dc5ad72b2"
	var test_addr = "0x8b1dd25076c04c5139acba458f86c69cd2d322c61d19bc28daa3bbd945083738"
	var contract_addr = "0x9f20baa40c45dc4125aeb26197c203e576ef389d9acb171bd62da11dc5ad72b3"

	result := circular_protocol_api.CallContract(blockchain, test_addr, contract_addr, "CRC_Contract.__GetContractName();")
	fmt.Println(result)
}
```

**Result**

The result will be of type `Map`, but for easier readability, here is the equivalent in JSON.

{% tabs %}
{% tab title="200" %}

```json
{
    "Result": 200,
    "Response": "7b20225f506572666f726d616e636522203a2022487970657220436f646520457865637574696f6e2054696d653a20313130307573222c200a0a225f436f6e736f6c655f4f757470757422203a202235343635373337343230373336643631373237343230363336663665373437323631363337343061227d",
    "Node": "7bb5bd50729d6857942701d5673ea70ca1625f883230d8543970a452d1abe1c4"
}
```

Remember to convert the response from Hex to String if you want to get the result in plain text.
{% endtab %}

{% tab title="117" %}
Wrong function call. Remember to pass the request in Hex format as shown in the body section or to verify that the smart contract address is the right one.

```json
{
    "Result": 117,
    "Response": "4552524f523a57726f6e672046756e6374696f6e2043616c6c3a200a",
    "Node": "7bb5bd50729d6857942701d5673ea70ca1625f883230d8543970a452d1abe1c4"
}
```

{% endtab %}
{% endtabs %}